Question

Airplane flight recorders must be able to survive
catastrophiccrashes. Therefore, they are typically encased in
crash-resistantsteel or titanium boxes that are subjected to
rigorous testing. Oneof the tests is an impact shock test, in which
the box must survivebeing thrown at high speeds against a barrier.
A 41 kg box isthrown at a speed of 260 m/s and isbrought to a halt
in a collision that lasts for a time of7.3 ms. What is the
magnitude of theaverage net force that acts on the box during the
colision?
N